Refactor to move implementation to lib/

index.js

@@ -1,87 +1,5 @@
 /**
- * @typedef {import('vfile').VFile} VFile
- * @typedef {import('vfile-message').VFileMessage} VFileMessage
+ * @typedef {import('./lib/index.js').Statistics} Statistics
  */
 
-/**
- * @typedef Statistics
- *   Statistics.
- * @property {number} fatal
- *   Fatal errors (`fatal: true`).
- * @property {number} warn
- *   Warnings (`fatal: false`).
- * @property {number} info
- *   Informational messages (`fatal: null | undefined`).
- * @property {number} nonfatal
- *   Warning + info.
- * @property {number} total
- *   Nonfatal + fatal.
- *
- * @typedef {'true' | 'false' | 'null'} Field
- *   Fatal field.
- */
-
-/**
- * Get stats for a file, list of files, or list of messages.
- *
- * @param {VFile | VFileMessage | Array<VFile | VFileMessage> | null | undefined} [value]
- * @returns {Statistics}
- */
-export function statistics(value) {
-  /** @type {Record<Field, number>} */
-  const result = {true: 0, false: 0, null: 0}
-
-  if (value) {
-    if (Array.isArray(value)) {
-      list(value)
-    } else {
-      one(value)
-    }
-  }
-
-  return {
-    fatal: result.true,
-    nonfatal: result.false + result.null,
-    warn: result.false,
-    info: result.null,
-    total: result.true + result.false + result.null
-  }
-
-  /**
-   * Count a list.
-   *
-   * @param {Array<VFile | VFileMessage>} value
-   *   List.
-   * @returns {void}
-   *   Nothing.
-   */
-  function list(value) {
-    let index = -1
-
-    while (++index < value.length) {
-      one(value[index])
-    }
-  }
-
-  /**
-   * Count a value.
-   *
-   * @param {VFile | VFileMessage} value
-   *   Value.
-   * @returns {void}
-   *   Nothing.
-   */
-  function one(value) {
-    if ('messages' in value) return list(value.messages)
-
-    const field = /** @type {Field} */ (
-      String(
-        value.fatal === undefined || value.fatal === null
-          ? null
-          : Boolean(value.fatal)
-      )
-    )
-
-    result[field]++
-  }
-}
+export {statistics} from './lib/index.js'

lib/index.js

@@ -0,0 +1,87 @@
+/**
+ * @typedef {import('vfile').VFile} VFile
+ * @typedef {import('vfile-message').VFileMessage} VFileMessage
+ */
+
+/**
+ * @typedef Statistics
+ *   Statistics.
+ * @property {number} fatal
+ *   Fatal errors (`fatal: true`).
+ * @property {number} warn
+ *   Warnings (`fatal: false`).
+ * @property {number} info
+ *   Informational messages (`fatal: null | undefined`).
+ * @property {number} nonfatal
+ *   Warning + info.
+ * @property {number} total
+ *   Nonfatal + fatal.
+ *
+ * @typedef {'true' | 'false' | 'null'} Field
+ *   Fatal field.
+ */
+
+/**
+ * Get stats for a file, list of files, or list of messages.
+ *
+ * @param {VFile | VFileMessage | Array<VFile | VFileMessage> | null | undefined} [value]
+ * @returns {Statistics}
+ */
+export function statistics(value) {
+  /** @type {Record<Field, number>} */
+  const result = {true: 0, false: 0, null: 0}
+
+  if (value) {
+    if (Array.isArray(value)) {
+      list(value)
+    } else {
+      one(value)
+    }
+  }
+
+  return {
+    fatal: result.true,
+    nonfatal: result.false + result.null,
+    warn: result.false,
+    info: result.null,
+    total: result.true + result.false + result.null
+  }
+
+  /**
+   * Count a list.
+   *
+   * @param {Array<VFile | VFileMessage>} value
+   *   List.
+   * @returns {void}
+   *   Nothing.
+   */
+  function list(value) {
+    let index = -1
+
+    while (++index < value.length) {
+      one(value[index])
+    }
+  }
+
+  /**
+   * Count a value.
+   *
+   * @param {VFile | VFileMessage} value
+   *   Value.
+   * @returns {void}
+   *   Nothing.
+   */
+  function one(value) {
+    if ('messages' in value) return list(value.messages)
+
+    const field = /** @type {Field} */ (
+      String(
+        value.fatal === undefined || value.fatal === null
+          ? null
+          : Boolean(value.fatal)
+      )
+    )
+
+    result[field]++
+  }
+}

package.json

@@ -30,6 +30,7 @@
   "main": "index.js",
   "types": "index.d.ts",
   "files": [
+    "lib/",
     "index.d.ts",
     "index.js"
   ],